Position Decoupling Control of Rigid Rotor of Active Magnetic Bearing

IF 0.6 4区 工程技术 Q4 MECHANICS
Mechanika Pub Date : 2023-08-09 DOI:10.5755/j02.mech.31642
Binglin Li, L. Zeng
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引用次数: 0

Abstract

The magnetic bearing rotor system has the problem of positional coupling in the direction of the radial degrees of freedom. This paper proposes a linear output feedback method which decouples the multi-variable coupling system into four single-degree-of-freedom second-order integral subsystems. Firstly, a five-degree-of-freedom(5-DOF) mathematical model of active magnetic bearing rotor is derived. Then, a sliding mode variable structure controller is designed for the decoupled subsystems and the stability of system is guaranteed by the Lyapunov stability theory. The results of computer simulation show that the design controller of sliding mode variable structure controller can more effectively enhance the magnetic bearing rotor performance stability compared with the conventional PD controller, fuzzy PD controller, no matter in the position respond control and anti-disturbance control. Moreover, the sliding mode variable structure controller make the system have better tracking performance.
主动磁轴承刚性转子位置解耦控制
磁轴承转子系统在径向自由度方向上存在位置耦合问题。提出了一种线性输出反馈方法,将多变量耦合系统解耦为4个单自由度二阶积分子系统。首先,建立了主动磁轴承转子的五自由度数学模型;然后,对解耦子系统设计滑模变结构控制器,利用Lyapunov稳定性理论保证系统的稳定性。计算机仿真结果表明,与传统PD控制器、模糊PD控制器相比,所设计的滑模变结构控制器无论在位置响应控制还是抗干扰控制方面都能更有效地提高磁轴承转子的性能稳定性。此外,滑模变结构控制器使系统具有更好的跟踪性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Mechanika
Mechanika 物理-力学
CiteScore
1.30
自引率
0.00%
发文量
50
审稿时长
3 months
期刊介绍: The journal is publishing scientific papers dealing with the following problems: Mechanics of Solid Bodies; Mechanics of Fluids and Gases; Dynamics of Mechanical Systems; Design and Optimization of Mechanical Systems; Mechanical Technologies.
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